Terminology & Miscellaneous

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Multimedia documents(a document contains information in the form of text, image, audio, animation, video etc) when formatted and annotated with the Hypertext Markup Language (HTML) which mainly includes hypertext, hypermedia etc. are called web page.
Typically, Web Pages are named or identified using URLs (Uniform Resource Locators).
Web pages, starts with a title, contain some information, and ends with the e-mail address of the page’s maintainer.
Webpages may contain links to images, video, and software components that are rendered to users of a web browser application, running on the user’s computer
A Web page normally contains ordinary text (not underlined) and a special text called hypertext (underlined). In addition, Web pages can also contain icons, line drawings, maps, and photographs. Each of these can (optionally) be linked to another page. Clicking on one of these elements causes the browser to fetch the linked page and display it on the screen, the same as clicking on text. With images such as photos and maps, which page is fetched next may depend on what part of the image was clicked on.
Not all web pages contain HTML rather some page may consist of a formatted document in PDF format, an icon in GIF format, a photograph in JPEG format, a song in MP3 format, a video in MPEG format, or any one of hundreds of other file types. Since standard HTML pages may link to any of these, the browser has a problem when it encounters a page it cannot interpret.

Strings of text that links with other page, are called hypertext, are often highlighted, by underlining, displaying them in a special color, or both.
The concept of having one page point to another, now called hypertext, was invented by a visionary M.I.T. professor of electrical engineering, Vannevar Bush, in 1945, long before the Internet was invented.
To follow/open that link/hypertext, the user places the mouse cursor on the highlighted area of text, which causes the cursor to change, and clicks on it, then other linked page appears/opens.
A page may contain one or more same or different hypertext as per need.
Single hypertext can be attached/hyperlinked with single other page.

The process of making hypertext in which strings of text that links to other page, are called hyperlinks.
The hyperlinked text are often recognized as highlighted, by underlining, displaying them in a special color, or both.
To follow/open the hyperlink text, the user places the mouse cursor on the highlighted area, which causes the cursor to change, and clicks on it.
Hyperlinks are considered as the backbone concept of web page/www/internet.
When a searched/fetched web page (again) contains one or more hyperlink to open another page, called embedded hyperlink. Embedded hyperlinks permit users to navigate between web pages.
When a user clicks on a hyperlink, the browser carries out a series of steps in order to fetch the page pointed to. The steps that occur when the link/hyperlink is selected/executed are :-
Step 1: The browser determines the URL (by seeing what was selected).

Step 2: The browser asks DNS for the IP address (of say http://www.abcd.com).
Step 3: DNS replies with specific destination Server IP address (say 156.106.192.32).
Step 4: The browser makes a TCP connection to port 80 on 156.106.192.32.
Step 5: It then sends over a request asking for file say products.html.
Step 6: The http://www.abcd.com server sends the file products.html.
Step 7: The browser displays all the text in products.html.
Step 8: The browser fetches and displays all images in this file.

When multiple related web pages are published/hosted on to the web server with a common theme and with a domain name along with particular URL are collectively called a web site.
The first page of a website is called a home page (or homepage) which is the main web page of a website. Sometimes, it is also known as the start page or startup page.
On August 6, 1991, the first website was introduced to the world as WWW and 1.9 billion or more websites that exist today.

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